Multiple choice

A masonry dam is found on previous sand having porosity equal to 45% and specific gravity of sand particles is 2.65. For a desired factor of safety of 3 against sand boiling, the maximum permissible upward gradient will be

  1. 0.225

  2. 0.302

  3. 1.0

  4. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation